package com.fuwu8858.controller;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;  
import java.text.SimpleDateFormat;  
import java.util.ArrayList;  
import java.util.Arrays;  
import java.util.Collections;  
import java.util.Comparator;  
import java.util.Date;  
import java.util.HashMap;  
import java.util.Hashtable;  
import java.util.Iterator;  
import java.util.List;  
import java.util.Map;  
import java.util.Random;  
  
import javax.servlet.ServletContext;  
import javax.servlet.ServletException;  
import javax.servlet.ServletOutputStream;  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
  
import org.apache.commons.fileupload.FileItem;  
import org.apache.commons.fileupload.FileItemFactory;  
import org.apache.commons.fileupload.FileUploadException;  
import org.apache.commons.fileupload.disk.DiskFileItemFactory;  
import org.apache.commons.fileupload.servlet.ServletFileUpload;  
import org.codehaus.jackson.map.ObjectMapper;  
import org.springframework.stereotype.Controller;  
import org.springframework.web.bind.annotation.RequestMapping;  
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import net.coobird.thumbnailator.Thumbnails;  
  
@Controller  
public class KindEditorController {  
  
    private static final ObjectMapper objectMapper = new ObjectMapper();  
    /**  
    
     * 返回html模板.  
  
     */  
  
    @RequestMapping("/hello")  
    public String helloHtml(Map<String,Object> map){  
  
       map.put("hello","from TemplateController.helloHtml");  
       return"/hello";  
    }  
    @RequestMapping(value = "/admin/kindeditor/file-upload.do", method = RequestMethod.POST)  
    @ResponseBody  
    public Map<String, Object> fileUpload(HttpServletRequest request,  
            HttpServletResponse response,@RequestParam("imgFile")MultipartFile file) throws ServletException, IOException,  
            FileUploadException {  
        ServletContext application = request.getSession().getServletContext();  
        String savePath = application.getRealPath("/") + "attached/";  
     
       
        // 文件保存目录URL  
        String saveUrl = request.getContextPath() + "/attached/";  
       
        // 定义允许上传的文件扩展名  
        HashMap<String, String> extMap = new HashMap<String, String>();  
        extMap.put("image", "gif,jpg,jpeg,png,bmp");  
        extMap.put("flash", "swf,flv");  
        extMap.put("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb");  
        extMap.put("file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2");  
  
        // 最大文件大小  
        long maxSize = 10485860;  
  
        response.setContentType("text/html; charset=UTF-8");  
  
        if (!ServletFileUpload.isMultipartContent(request)) {  
            return getError("请选择文件。");  
            
        }  
        System.out.println(savePath);
        // 检查目录  
        File uploadDir = new File(savePath);  
        if (!uploadDir.isDirectory()) {  
//            return getError("上传目录不存在。");  
        	System.out.println("上传目录不存在,将要创建新目录");
           	uploadDir.mkdirs(); 
        } 
        // 检查目录写权限  
        if (!uploadDir.canWrite()) {  
            return getError("上传目录没有写权限。");  
        }  
  
        String dirName = request.getParameter("dir");  
        if (dirName == null) {  
            dirName = "image";  
        }  
        if (!extMap.containsKey(dirName)) {  
            return getError("目录名不正确。");  
        }  
        // 创建文件夹  
        savePath += dirName + "/";  
        saveUrl += dirName + "/";  
        File saveDirFile = new File(savePath);  
        if (!saveDirFile.exists()) {  
            saveDirFile.mkdirs();  
        }  
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");  
        String ymd = sdf.format(new Date());  
        savePath += ymd + "/";  
        saveUrl += ymd + "/";  
        File dirFile = new File(savePath);  
        if (!dirFile.exists()) {  
            dirFile.mkdirs();  
        }  
  
        FileItemFactory factory = new DiskFileItemFactory();  
        ServletFileUpload upload = new ServletFileUpload(factory);  
        upload.setHeaderEncoding("UTF-8");  
        List items = upload.parseRequest(request);  
        Iterator itr = items.iterator();  
       
//            FileItem item = (FileItem) itr.next();  
            String fileName = file.getOriginalFilename();  
            if (true) {  
                // 检查文件大小  
                if (file.getSize() > maxSize) {  
                	System.out.println(file.getSize());
                    return getError("上传文件大小超过限制。");  
                }  
                // 检查扩展名  
                String fileExt = fileName.substring(  
                        fileName.lastIndexOf(".") + 1).toLowerCase();  
                if (!Arrays.<String> asList(extMap.get(dirName).split(","))  
                        .contains(fileExt)) {  
                    return getError("上传文件扩展名是不允许的扩展名。\n只允许"  
                            + extMap.get(dirName) + "格式。");  
                }  
  
                SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");  
                String newFileName = df.format(new Date()) + "_"  
                        + new Random().nextInt(1000) + "." + fileExt;  
                try {  
                	System.out.println("savePath:"+savePath);
                	System.out.println("newFileName:"+newFileName);
                    File uploadedFile = new File(savePath, newFileName);  
                    File saveFile = new File(savePath+newFileName);  
                    	file.transferTo(saveFile);
                    	createThumbnail(savePath, newFileName); 
                } catch (Exception e) {  
                	e.printStackTrace();
                    return getError("上传文件失败。");  
                }  
  
                Map<String, Object> msg = new HashMap<String, Object>();  
                msg.put("error", 0);  
                msg.put("url", saveUrl + newFileName);  
                return msg;  
            }  
         
        return null;  
    }
	
	/**
	 * @param savePath
	 * @param newFileName
	 */
	private void createThumbnail(String savePath, String newFileName) {
		try {
			Thumbnails.of(savePath+newFileName)   
			.size(200,200)  
			.toFile(savePath+"thump"+newFileName);
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}  
  
    private Map<String, Object> getError(String message) {  
        Map<String, Object> msg = new HashMap<String, Object>();  
        msg.put("error", 1);  
        msg.put("message", message);  
        return msg;  
    }  
  
    @RequestMapping(value = "/admin/kindeditor/file-manager.do")  
    public void fileManager(HttpServletRequest request,  
            HttpServletResponse response) throws ServletException, IOException {  
        ServletContext application = request.getSession().getServletContext();  
        ServletOutputStream out = response.getOutputStream();  
        // 根目录路径，可以指定绝对路径，比如 /var/www/attached/  
        String rootPath = application.getRealPath("/") + "attached/";  
        // 根目录URL，可以指定绝对路径，比如 http://www.yoursite.com/attached/  
        
        String rootUrl = request.getContextPath() + "/attached/";  

        // 图片扩展名  
        String[] fileTypes = new String[] { "gif", "jpg", "jpeg", "png", "bmp" };  
  
        String dirName = request.getParameter("dir");  
        if (dirName != null) {  
            if (!Arrays.<String> asList(  
                    new String[] { "image", "flash", "media", "file" })  
                    .contains(dirName)) {  
                out.println("Invalid Directory name.");  
                return;  
            }  
            rootPath += dirName + "/";  
            rootUrl += dirName + "/";  
            File saveDirFile = new File(rootPath);  
            if (!saveDirFile.exists()) {  
                saveDirFile.mkdirs();  
            }  
        }  
        // 根据path参数，设置各路径和URL  
        String path = request.getParameter("path") != null ? request  
                .getParameter("path") : "";  
        String currentPath = rootPath + path;  
        String currentUrl = rootUrl + path;  
        String currentDirPath = path;  
        String moveupDirPath = "";  
        if (!"".equals(path)) {  
            String str = currentDirPath.substring(0,  
                    currentDirPath.length() - 1);  
            moveupDirPath = str.lastIndexOf("/") >= 0 ? str.substring(0,  
                    str.lastIndexOf("/") + 1) : "";  
        }  
  
        // 排序形式，name or size or type  
        String order = request.getParameter("order") != null ? request  
                .getParameter("order").toLowerCase() : "name";  
  
        // 不允许使用..移动到上一级目录  
        if (path.indexOf("..") >= 0) {  
            out.println("Access is not allowed.");  
            return;  
        }  
        // 最后一个字符不是/  
        if (!"".equals(path) && !path.endsWith("/")) {  
            out.println("Parameter is not valid.");  
            return;  
        }  
        // 目录不存在或不是目录  
        File currentPathFile = new File(currentPath);  
        if (!currentPathFile.isDirectory()) {  
            out.println("Directory does not exist.");  
            return;  
        }  
        // 遍历目录取的文件信息  
        List<Hashtable> fileList = new ArrayList<Hashtable>();  
        if (currentPathFile.listFiles() != null) {  
            for (File file : currentPathFile.listFiles()) {  
                Hashtable<String, Object> hash = new Hashtable<String, Object>();  
                String fileName = file.getName();  
                if (file.isDirectory()) {  
                    hash.put("is_dir", true);  
                    hash.put("has_file", (file.listFiles() != null));  
                    hash.put("filesize", 0L);  
                    hash.put("is_photo", false);  
                    hash.put("filetype", "");  
                } else if (file.isFile()) {  
                    String fileExt = fileName.substring(  
                            fileName.lastIndexOf(".") + 1).toLowerCase();  
                    hash.put("is_dir", false);  
                    hash.put("has_file", false);  
                    hash.put("filesize", file.length());  
                    hash.put("is_photo", Arrays.<String> asList(fileTypes)  
                            .contains(fileExt));  
                    hash.put("filetype", fileExt);  
                }  
                hash.put("filename", fileName);  
                hash.put("datetime",  
                        new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(file  
                                .lastModified()));  
                fileList.add(hash);  
            }  
        }  
  
        if ("size".equals(order)) {  
            Collections.sort(fileList, new SizeComparator());  
        } else if ("type".equals(order)) {  
            Collections.sort(fileList, new TypeComparator());  
        } else {  
            Collections.sort(fileList, new NameComparator());  
        }  
        Map<String, Object> msg = new HashMap<String, Object>();  
        msg.put("moveup_dir_path", moveupDirPath);  
        msg.put("current_dir_path", currentDirPath);  
        msg.put("current_url", currentUrl);  
        msg.put("total_count", fileList.size());  
        msg.put("file_list", fileList);  
        response.setContentType("application/json; charset=UTF-8");  
        String msgStr = objectMapper.writeValueAsString(msg);  
        out.println(msgStr);  
    }  
  
    class NameComparator implements Comparator {  
        public int compare(Object a, Object b) {  
            Hashtable hashA = (Hashtable) a;  
            Hashtable hashB = (Hashtable) b;  
            if (((Boolean) hashA.get("is_dir"))  
                    && !((Boolean) hashB.get("is_dir"))) {  
                return -1;  
            } else if (!((Boolean) hashA.get("is_dir"))  
                    && ((Boolean) hashB.get("is_dir"))) {  
                return 1;  
            } else {  
                return ((String) hashA.get("filename"))  
                        .compareTo((String) hashB.get("filename"));  
            }  
        }  
    }  
  
    class SizeComparator implements Comparator {  
        public int compare(Object a, Object b) {  
            Hashtable hashA = (Hashtable) a;  
            Hashtable hashB = (Hashtable) b;  
            if (((Boolean) hashA.get("is_dir"))  
                    && !((Boolean) hashB.get("is_dir"))) {  
                return -1;  
            } else if (!((Boolean) hashA.get("is_dir"))  
                    && ((Boolean) hashB.get("is_dir"))) {  
                return 1;  
            } else {  
                if (((Long) hashA.get("filesize")) > ((Long) hashB  
                        .get("filesize"))) {  
                    return 1;  
                } else if (((Long) hashA.get("filesize")) < ((Long) hashB  
                        .get("filesize"))) {  
                    return -1;  
                } else {  
                    return 0;  
                }  
            }  
        }  
    }  
  
    class TypeComparator implements Comparator {  
        public int compare(Object a, Object b) {  
            Hashtable hashA = (Hashtable) a;  
            Hashtable hashB = (Hashtable) b;  
            if (((Boolean) hashA.get("is_dir"))  
                    && !((Boolean) hashB.get("is_dir"))) {  
                return -1;  
            } else if (!((Boolean) hashA.get("is_dir"))  
                    && ((Boolean) hashB.get("is_dir"))) {  
                return 1;  
            } else {  
                return ((String) hashA.get("filetype"))  
                        .compareTo((String) hashB.get("filetype"));  
            }  
        }  
    }  
  
}  
